Coding and Decoding Questions

In a certain code language, “LINKS” is written as “93210” and “CROMA” is written as “84576”. How is “ROCKS” written in that code language?

Some equations are solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

5 x 4 x 3 = 70 ,
6 x 5 x 4 = 140
7 x 6 x 5 = ?

If 80&10 = -8, 50&2 = -25 and 80&16 = -5, then find the value of 20&5 = ?

If ' + ' means minus , ' - ' means multiplication , ' ÷ ' means plus , and ' x ' means division , then 15 - 3 + 10 x 5 ÷ 5

If, 6x4= 12, 4x12= 24, 12x6= 36 then 6x9= ?

If ALPHA = 36, BETA = 26 then DELTA = ?

If the code for MOTHER is JRQKBU then what is the code for PRINCIPAL?

If 'god id fair' = 'ge se fa', 'who is god' = 'ge we fa' and 'you are god' = 'ae le fa, which code does represent 'is'?